The AM1880-1960D1005 from Anatech is a ceramic duplexer with pass band frequencies from 1.85 to 1.91 GHz and 1.93 to 1.99 GHz. It has an insertion loss of 3.7 dB, pass band ripple of 2.4 dB and return loss of 10 dB. This duplexer can handle up to 5 W of power and has 38 dB channel isolation. It is available in a surface mount package that measures 28.48 x 6.85 x 4.90 mm and is ideal for PCS band applications.